The Fermi-GBM Gamma-Ray Burst Catalogs: The First Six Years

Abstract

Abstract. Since its launch in 2008, the Fermi Gamma-ray Burst Monitor (GBM) has triggered and located on average approximately two gamma-ray bursts (GRBs) every three days. Here we present the main results from the latest two catalogs provided by the Fermi-GBM science team, namely the third GBM GRB catalog [1] and the first GBM time-resolved spectral catalog [2]. The intention of the GBM GRB catalog is to provide information to the community on the most important observables of the GBM detected bursts. It comprises 1405 triggers identified as GRBs. For each one, location and main characteristics of the prompt emission, the duration, the peak flux and the fluence are derived. The GBM time-resolved spectral catalog presents high-quality time-resolved spectral analysis with high temporal and spectral resolution of the brightest bursts observed by Fermi GBM in a shorter period than the former catalog, namely four years. It comprises 1491 spectra from 81 bursts. Distributions of parameters, statistics of the parameter populations, parameter-parameter and parameter-uncertainty correlations, and their exact values are obtained.

GRB 221009A: An Ordinary Nearby GRB with Extraordinary Observational Properties

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Statistical properties of Fermi GBM GRBs’ spectra

“…Studying the temporal variation of GRB spectra revealed four different types of behaviors (Golenetskii et al 1983;Norris et al 1986;Ford et al 1995;Veres et al 2012Veres et al , 2013Veres & Mészáros 2014;Yu et al 2016Yu et al , 2015Bissaldi et al 2017;Aimuratov et al 2017):…”